private void ProcessStream()
{
bool blockY0HasAcComponents = false;
bool blockY1HasAcComponents = false;
bool blockY2HasAcComponents = false;
bool blockY3HasAcComponents = false;
bool blockCbHasAcComponents = false;
bool blockCrHasAcComponents = false;
//Set StreamFieldBitIndex to 32 to make sure that the first call to ReadStreamData
//actually consumes data from the stream
StreamFieldBitIndex = 32;
StreamField = 0;
StreamIndex = 0;
SliceIndex = 0;
PictureComplete = false;
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
while (!PictureComplete && StreamIndex < (ImageStream.Length >> 2))
{
ReadHeader();
if (!PictureComplete)
{
for (int count = 0; count < BlockCount; count++)
{
uint macroBlockEmpty = ReadStreamData(1);
if (macroBlockEmpty == 0)
{
uint acCoefficients = ReadStreamData(8);
blockY0HasAcComponents = (acCoefficients >> 0 & 1) == 1;
blockY1HasAcComponents = (acCoefficients >> 1 & 1) == 1;
blockY2HasAcComponents = (acCoefficients >> 2 & 1) == 1;
blockY3HasAcComponents = (acCoefficients >> 3 & 1) == 1;
blockCbHasAcComponents = (acCoefficients >> 4 & 1) == 1;
blockCrHasAcComponents = (acCoefficients >> 5 & 1) == 1;
if ((acCoefficients >> 6 & 1) == 1)
{
uint quantizerMode = ReadStreamData(2);
QuantizerMode = (int)((quantizerMode < 2) ? ~quantizerMode : quantizerMode);
}
#region Block Y0
GetBlockBytes(blockY0HasAcComponents);
InverseTransform(count, 0);
#endregion
#region Block Y1
GetBlockBytes(blockY1HasAcComponents);
InverseTransform(count, 1);
#endregion
#region Block Y2
GetBlockBytes(blockY2HasAcComponents);
InverseTransform(count, 2);
#endregion
#region Block Y3
GetBlockBytes(blockY3HasAcComponents);
InverseTransform(count, 3);
#endregion
#region Block Cb
GetBlockBytes(blockCbHasAcComponents);
InverseTransform(count, 4);
#endregion
#region Block Cr
GetBlockBytes(blockCrHasAcComponents);
InverseTransform(count, 5);
#endregion
}
}
ComposeImageSlice();
}
}
uint[] PxData = new uint[PixelData.Length];
for (int i = 0; i < PixelData.Length; i++)
{
PxData[i] = rgb565_to_premult_argb(PixelData[i]);
}
var data = InternalImageSource.LockBits(new Rectangle(0, 0, InternalImageSource.Width, InternalImageSource.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
unsafe {
uint *dst = (uint *)data.Scan0;
fixed(uint *src = PxData)
{
for (int i = 0; i < PxData.Length; i++)
{
*(dst + i) = *(src + i);
}
}
}
if (ImageComplete != null)
{
ImageComplete(this, new ImageCompleteEventArgs(ImageSource));
}
}
private void ProcessStream()
{
bool blockY0HasAcComponents = false;
bool blockY1HasAcComponents = false;
bool blockY2HasAcComponents = false;
bool blockY3HasAcComponents = false;
bool blockCbHasAcComponents = false;
bool blockCrHasAcComponents = false;
//Set StreamFieldBitIndex to 32 to make sure that the first call to ReadStreamData
//actually consumes data from the stream
StreamFieldBitIndex = 32;
StreamField = 0;
StreamIndex = 0;
SliceIndex = 0;
PictureComplete = false;
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
while (!PictureComplete && StreamIndex < (ImageStream.Length >> 2))
{
ReadHeader();
if (!PictureComplete)
{
for (int count = 0; count < BlockCount; count++)
{
uint macroBlockEmpty = ReadStreamData(1);
if (macroBlockEmpty == 0)
{
uint acCoefficients = ReadStreamData(8);
blockY0HasAcComponents = (acCoefficients >> 0 & 1) == 1;
blockY1HasAcComponents = (acCoefficients >> 1 & 1) == 1;
blockY2HasAcComponents = (acCoefficients >> 2 & 1) == 1;
blockY3HasAcComponents = (acCoefficients >> 3 & 1) == 1;
blockCbHasAcComponents = (acCoefficients >> 4 & 1) == 1;
blockCrHasAcComponents = (acCoefficients >> 5 & 1) == 1;
if ((acCoefficients >> 6 & 1) == 1)
{
uint quantizerMode = ReadStreamData(2);
QuantizerMode = (int)((quantizerMode < 2) ? ~quantizerMode : quantizerMode);
}
#region Block Y0
GetBlockBytes(blockY0HasAcComponents);
InverseTransform(count, 0);
#endregion
#region Block Y1
GetBlockBytes(blockY1HasAcComponents);
InverseTransform(count, 1);
#endregion
#region Block Y2
GetBlockBytes(blockY2HasAcComponents);
InverseTransform(count, 2);
#endregion
#region Block Y3
GetBlockBytes(blockY3HasAcComponents);
InverseTransform(count, 3);
#endregion
#region Block Cb
GetBlockBytes(blockCbHasAcComponents);
InverseTransform(count, 4);
#endregion
#region Block Cr
GetBlockBytes(blockCrHasAcComponents);
InverseTransform(count, 5);
#endregion
}
}
ComposeImageSlice();
}
}
uint[] PxData = new uint[PixelData.Length];
for (int i = 0; i < PixelData.Length; i++)
{
PxData[i] = rgb565_to_premult_argb(PixelData[i]);
}
Array.Copy(PxData, 0, InternalImageSource.Pixels, 0, PxData.Length);
InternalImageSource.Invalidate();
if (ImageComplete != null)
{
ImageComplete(this, new ImageCompleteEventArgs(ImageSource));
}
}
